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|ID||Project||Category||View Status||Date Submitted||Last Update|
|0002745||Kdenlive||MLT||public||2012-09-20 15:11||2012-09-24 10:06|
|Platform||64 bit||OS||Kubuntu||OS Version||11.10|
|Target Version||Fixed in Version|
|Summary||0002745: Very slow seeking with big files|
I'm trying to edit some 3 hours WebM files (640x360 @ 24 fps).
Seeking a is OK *around the beginning* of the clip but become slower as I go later in it, more and more slower when going to the end...
Practically, I click in the time bar, say at 2:30:00, the playback stops, a kdenlive thread take 100% of a core during 4 or 5 mn and start again. As the bug happens also on transitions, it nearly impossible to work.
BUT, this bug doesn't exist in Kdenlive 0.8-4 !!
|Steps To Reproduce||1. Add a long WebM clip like this one:|
2. go to 0:02:00, play, wait for 0.1s, then playback :)
3. go to 2:30:00, play, wait for 6s + hard CPU load, then playback :(
|Additional Information||I repeat, I don't have this bug using Kdenlive 0.8-4 !|
|Tags||No tags attached.|
|Build/Install Method||3rd party package|
|I can reproduce it.|
Seems to be an MLT issue. I can reproduce using melt. Seeking delay is quickly growing when approaching one hour.
Seeking with avplay works fine, so it is probably a problem in MLT. You can always try to convert your file to a more commonly used video format (in Kdenlive, right click on the clip and transcode > dnxhd). Maybe that will improve seeking.
Thanks for applying.
For the moment, I use 0.8 on Kubuntu 11.10 which depends on libmlt4 (0.7.4) and is really fine for my work even on big files. But, if I can help to fix this, I can compile and test some patch (sorry I'm a python dev, not qt nor c++)..
|One more thing: Kdenlive really rocks!! Kudos to the dev team ;)|
|2012-09-20 15:11||yomguy||New Issue|
|2012-09-22 13:16||eddrog||Note Added: 0008368|
|2012-09-22 18:22||j-b-m||Note Added: 0008375|
|2012-09-22 18:22||j-b-m||Assigned To||=> j-b-m|
|2012-09-22 18:22||j-b-m||Status||new => acknowledged|
|2012-09-22 18:23||j-b-m||Category||User Interface => MLT|
|2012-09-24 10:04||yomguy||Note Added: 0008386|
|2012-09-24 10:06||yomguy||Note Added: 0008387|
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